File tiering with data integrity checks

A method comprising:

• computing, by executing one or more hashing algorithms, a first hash value for at least one file of a plurality of files to be tiered in connection with a file tiering operation of the plurality of files from a source storage location to a destination storage location, wherein computing the first hash value comprises computing a plurality of intermediate hash values for a plurality of data chunks of the at least one file, wherein the file tiering operation comprises writing the plurality of data chunks of the at least one file to an object on the destination storage location in response to computing the plurality of intermediate hash values;
• comparing the first hash value to a second hash value for the at least one file, wherein the second hash value is computed from data in the object on the destination storage location corresponding to the at least one file;
• determining, based at least in part on the comparing, whether the first hash value is the same as the second hash value, wherein the first hash value and the second hash value are determined to be the same when the first hash value and the second hash value match;
• and
• proceeding with tiering of the at least one file in response to an affirmative determination;
• wherein the method is performed by at least one processing platform comprising at least one processing device comprising a processor coupled to a memory.

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing platform causes said at least one processing platform:

• to compute, by executing one or more hashing algorithms, a first hash value for at least one file of a plurality of files to be tiered in connection with a file tiering operation of the plurality of files from a source storage location to a destination storage location, wherein computing the first hash value comprises computing a plurality of intermediate hash values for a plurality of data chunks of the at least one file, wherein the file tiering operation comprises writing the plurality of data chunks of the at least one file to an object on the destination storage location in response to computing the plurality of intermediate hash values;
• to compare the first hash value to a second hash value for the at least one file, wherein the second hash value is computed from data in the object on the destination storage location corresponding to the at least one file;
• to determine, based at least in part on the comparing, whether the first hash value is the same as the second hash value, wherein the first hash value and the second hash value are determined to be the same when the first hash value and the second hash value match;
• and
• to proceed with tiering of the at least one file in response to an affirmative determination.